The largest problem of sail equipped motor vessel is poor manoeuvring by effect of sail. But this important problem has been left unsolved. In order to remove this defect, we develop a 2 dimensional bird's -eye view manoeuvring simulator with five automatic controls and discuss the manoeuvring ability using the simulator. Above five automatic controls are follows. (1) Ahead control (2) Turing control (3) Heave to control (4) Astern control (5) Aslant move control The results of the simulations on the simulator show a significant improvement in ship manoeuvring of sail equipped motor vessel.